"""
期货股票数据统一平台 - 配置文件
"""
import os
from functools import lru_cache
from typing import Optional

from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    """应用配置"""
    
    # 应用基础配置
    APP_NAME: str = "金融数据中台"
    APP_VERSION: str = "2.0.0"
    DEBUG: bool = True
    API_PREFIX: str = "/api"  # v2 路由使用 /api/v2/xxx
    
    # 服务器配置
    HOST: str = "0.0.0.0"
    PORT: int = 8000
    
    # 安全配置
    SECRET_KEY: str = "your-secret-key-change-in-production"
    ALGORITHM: str = "HS256"
    ACCESS_TOKEN_EXPIRE_MINUTES: int = 60
    REFRESH_TOKEN_EXPIRE_DAYS: int = 7
    
    # 数据库配置 - TimescaleDB (时序数据)
    TIMESCALE_DB_URL: str = "postgresql://postgres:postgres@timescaledb:5432/kline_data"
    
    # 数据库配置 - SQLite (配置数据)
    SQLITE_DB_PATH: str = "/app/data/config.db"
    
    # Redis 配置
    REDIS_URL: str = "redis://redis:6379/0"
    REDIS_HOST: str = "redis"
    REDIS_PORT: int = 6379
    REDIS_DB: int = 0
    
    # amazingData SDK 配置 - 银河证券星耀数智量化平台
    AMAZING_DATA_HOST: str = "140.206.44.234"
    AMAZING_DATA_PORT: int = 8600
    AMAZING_DATA_ACCOUNT: str = "11200008169"
    AMAZING_DATA_PASSWORD: str = "11200008169@2026"
    AMAZING_DATA_ENV: str = "production"  # simulation or production
    
    # 日志配置
    LOG_LEVEL: str = "INFO"
    LOG_FORMAT: str = "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
    
    # CORS 配置
    CORS_ORIGINS: list = ["*"]
    
    # 限流配置
    RATE_LIMIT_PER_MINUTE: int = 60
    
    # WebSocket 配置
    WS_HEARTBEAT_INTERVAL: int = 30
    
    class Config:
        env_file = ".env"
        case_sensitive = True


@lru_cache()
def get_settings() -> Settings:
    """获取配置单例"""
    return Settings()


settings = get_settings()